Data Synchronization Accross Multiple Servers Running Replication
Apr 19, 2007
Hello,
We have an environment with 7 servers that are running replication with one another and I'm wondering if there are any tools or experiences that any of you might have that may assist in the auditing of these servers. The data should be in synch accross the boards for all tables, but sometimes problems can arise such as replication not being set up properly, stored procedure's being out of synch, or data gliches etc.
In dealing with these issues we have an in-house written program which analises each table on each server and takes a snapshot and does column by column compare. We also have another program that will synch the data up (basically a delete/insert statement on the publisher). This process can take up to 3 weeks for our quarterly update of every table. I'm wondering if anybody has used any tools such as in SSIS or a third party tool and has done or is doing something similar to what we are doing now. If so, are there any tips you wouldn't mind sharing on how our process might be sped up?
Thanks,
Phil
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Sep 13, 2007
Hi,
I'm trying to create a database that takes specific information from a number of databases on different servers to make some reporting that we have much easier.
I'm pretty new to SQL so I'm not sure of the best way to proceed. I read an article that suggested I use the OPENROWSET command. The problem is, the version of SQL that came with one of the programmes we use is limited and will not allow you to turn on the allow "Ad Hoc distributed Queries" so the SLQ statement will not execute.
I'm confused why it won't let me to connect through ODBC as I've created a web page that selects data from this database with no problems!
Here is the SQL statement that I've written to make sure it is the correct one (on the msdn library page it said that this was the ODBC connection):
SELECT a.*
FROM OPENROWSET('MSDASQL','DRIVER=(SQL Server);SERVER=APPOLOACT7;UID=sa;PWD=***************',
'SELECT * FROM MDCTestAndDev.dbo.TBL_CONTACT') AS a
I've also created the ODBC connection using the tool on Administration Tools>Data Sources ODBC
Any help would be greatly appreciated (also any ways of selecting from one database and inserting it into another will be helpfull)
Thanks
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Apr 20, 2007
Hi,
Is there a way to take a snapshot of a table at precisely the same time on multiple servers and write the table snapshot to another 'work' database? I'm asking in this forum hoping that perhaps SSIS has a built in tool to help with this. I'm wanting to audit table(s) accross seven different servers. In order to do this I want to make sure that I have the table at the same moment in time on all the servers. I plan on using the tablediff utility to then compare each table on each server against one another. If somebody knows a better method to do this please let me know.
Thanks,
Phil
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Mar 30, 2000
Is there anyway that I can run a procedure that will give me all the indexes on tables that are accross multiple servers?
Thanks for any help.
Dianne
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Nov 28, 2006
First thanks for your time.
We have 4 clustered SQL2000 Servers each contains information specific to its application related to customer information in a casino player tracking database. My problem is as follows On the Playertracking database I can join and return information from the tables there with no problems the performance accross the decently sizable transactional based table is pretty decent. The problem is I need to filter this query down by the Type of machine the customer plays. The child key exists in the playertransaction table the parent key is on another server. Here is the lay out of the tables unecessary information from the tables were truncated for brevity.
CREATE TABLE [dbo].[PlayerSession] (
[PlayerId] [int] NOT NULL ,
[Mnum] [int] NOT NULL ,
[CoinIn] [money] NOT NULL ,
[CoinOut] [money] NOT NULL ,
[Games] [int] NOT NULL ,
[Jackpot] [money] NULL ,
[Win] [money] NULL ,
[TheoWin] [money] NOT NULL ,
[PlayerMod] [tinyint] NOT NULL
) ON [PRIMARY]
-- Player Demographics information
CREATE TABLE [dbo].[Player] (
[PlayerId] [int] NOT NULL ,
[Status] [char] (1) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[Title] [varchar] (5) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[FirstName] [varchar] (40) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[MiddleName] [varchar] (40) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[LastName] [varchar] (40) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[SSN] [varchar] (16) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
) ON [PRIMARY]
--Machine Information that links to Machine Type table
CREATE TABLE [dbo].[Machine] (
[MNum] [int] NOT NULL ,
[MachineTypeId] [smallint] NOT NULL ,
) ON [PRIMARY]
-- Machine type code table
CREATE TABLE [dbo].[MachineType] (
[MachineTypeId] [smallint] NOT NULL ,
[Denom] [int] NOT NULL ,
[Par] [decimal](6, 2) NOT NULL ,
[GameType] [varchar] (40) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
) ON [PRIMARY]
From the server where all the player information is ran I can query the linked database for the machine and machine type information like this.
SELECT m.MNum, mt.MachineTypeId, mt.GameType, mt.DisplayType
FROM ACCTV.Accounting.dbo.Machine m INNER JOIN
ACCTV.Accounting.dbo.MachineType mt ON m.MachineTypeId = mt.MachineTypeId
This is the information I am trying to get out but the query times out on me.
SELECT Player.PlayerId, Player.FirstName, Player.LastName, SUM(PlayerSession.CoinIn) AS sumCI, SUM(PlayerSession.CoinOut) AS SumCO,SUM(PlayerSession.TheoWin) AS SumTheo, AVG(PlayerSession.TheoWin) AS AvgTheo, SUM(PlayerSession.Win) AS SumWin, AVG(PlayerSession.Win) AS AvgWin, mt.GameType
FROM Player INNER JOIN
PlayerSession ON Player.PlayerId = PlayerSession.PlayerId INNER JOIN
ACCT.Accounting.dbo.Machine M ON PlayerSession.Mnum = M.MNum INNER JOIN
ACCT.Accounting.dbo.MachineType mt ON M.MachineTypeId = mt.MachineTypeId
GROUP BY Player.PlayerId, Player.FirstName, Player.LastName, mt.GameType
The other option would be some sort of SubQuery but I dont know how to return results from the subqueries to the root query to be returned to the restulting recordset. I am not necessarily looking for an answer more of looking for a direction to go to find my solution.
Thanks again for your help.
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Feb 29, 2008
Hi,
I have zero experience running any databases that spread further than 1 machine, so I have a few theory questions here that hopefully someone can help with. Hopefully this is the right forum, I'm not sure if it classifies as 'clustering'.
Anyways, we are launching a web app that is going to start with just 1 webserver/db server. For speed reasons, after some growth we might have to have a load balanced setup with a webserver in europe and one in north america. Basically the webservers are going to be serving 100,000's of files and each time a file is served it needs to be recorded in the database.
I think that if I'm connecting my european webserver across the internet to my db server, thats killing the purpose of having a webserver in europe to make for faster responses.
I am thinking that this european web server/db serving is only going to be logging the files served. Is there a way to import them into north american database everynight ?
I'm not sure what the best approach would be for something like this, but any suggestions are greatly appreciated.
Thanks very much,
mike123
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Apr 1, 2008
I am designing a mobile application.I am having database in sql server 2005 and i want to synchronize this database with sql server ce database on pda.I am using merge replication method for synchronization.Please give step by step procedure for data synchronization using merge replication between sql server 2005 and sql server ce 2.0,also let me know whether sql server enterprise manager is needed or will it work without it,if needed give me the link from where to download it as it is not available in sql server 2005.
Reply soon.
Thanks in advance.
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Jul 12, 2000
suppose i am repliacting(Transactional Replication) to two servers using the same publications can i stop replicating to one server without disturbing the other server?
If i resume the replication to the server after two days what will happen to the two day's data?will they be replicated when i resume the replication?
Thank you
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Jul 23, 2005
"David Portas" <snipped for brevity> wrote:Example 1:[color=blue]>> UPDATE table_a> SET col = ? /* Unspecified */> WHERE EXISTS> (SELECT *> FROM table_b> WHERE table_b.key_col = table_a.key_col)>[/color]<snip again>Many thanks. I have used this sample extensively since you posted it. Hopeyou (or someone) can help me with one more thing: How would it be writtento update several fields in table A with data from table B, where as youhave shown, a column matches the records?TIA!~ Duane Phillips.
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Feb 18, 2007
I'm using EncryptByKey to encrypt data in my SS2005 database. Since our server is really slow to access from home to work on, I used the Database Publishing Wizard and installed the db to work on at home. Then I created the certificate and symmetric key in my home db.
When I pull info using the DecryptByKey on our database at work on Windows 2003 Server, no problem, the data is decrypted. However, the same data does not decrypt at home on my Windows XP computer. I'm using TripleDes on both machines for the symmetric key (AES won't work on XP).
--To create my cert and key:
USE My_DB;
CREATE CERTIFICATE MyCert
ENCRYPTION BY PASSWORD = 'some password'
WITH SUBJECT = My Data',
START_DATE = '01/01/2007',
EXPIRY_DATE = '01/01/2099';
GO
CREATE SYMMETRIC KEY MyKey WITH ALGORITHM = TRIPLE_DES
ENCRYPTION BY CERTIFICATE MyCert;
GO
To encrypt:
OPEN SYMMETRIC KEY MyKey
DECRYPTION BY CERTIFICATE MyCert
WITH PASSWORD = 'same password as above';
Insert my record, use scope_identity to return primary key into @CustomerID.
INSERT INTO [Customers] (EncryptByKey(Key_GUID('MyKey'), @DataToEncrypt, 1, CONVERT( varbinary, @CustomerID)))
CLOSE SYMMETRIC KEY MyKey
To decrypt:
SELECT CONVERT(varchar(3925), DecryptByKey(EncryptedField, 1, CONVERT( varbinary, @CustomerID))) as PlainTextData
FROM Customers
WHERE (CustomerID= @CustomerID)
Everything works fine when I run the decrypt query on the database on our work server. But I'm not getting decrypted data at home. Is the symmetric key or certificate machine specific? If so, that will cause a huge problem when we deploy to a production server.
Thanks in advance for your help!
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Nov 9, 2001
I have multiple SQL 2000 servers that hold data which I retrieve using a single SQL stored procedure. Unfortunately, I don't know how to retrieve this data asychronously (in parallel).
For example, I retrieve data from two linked servers using the following:
select * into #temp from openquery(SomeLinkedServer,'exec BigQueryHere')
select * into #temp2 from openquery(OtherLinkedServer,'exec BigQueryThere')
.
.
lots of manipulation of the temporary tables to get what I want, etc.
.
.
The problem I have with this is that there is no reason why the first query should have to finish before the second query begins (serially) because these are on separate servers. Is there a way to execute these so that they run at the same time?
Bill
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Jul 23, 2005
Hi everyone,I have 5 servers, all with identical databases just different data. Ihave a rather lengthy SQL statement (in a View) to hit one database andpull-in certain data, but I'd like to somehow run this same SQLstatement within the view but hit all 5 servers so we don't have 5different versions of this data to mess with.I'm not opposed to creating an update query in a stored procedure tohit all 5 databases and update a table or even do this within a DTS,but I'd prefer to keep it as simple as possible and as dynamic so theusers can simply run the view and get live data anytime based on all 5tables.Is this possible ???Thanks,rlangly
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Jun 17, 2008
I went to View Synchronization status and see that the sychronization has been running for two hours already. Is that normal? I thought it would just find the one change I made and update that one change?
Thanks in advance!
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Jul 10, 2007
Hi, there;
We have device using sqlce2.0 and replicate data with sql2000.
Now we have new WM5 device which uses SqlCe3.0. So I need to install connectivity tools
using "SqlCe30setupen.msi".
I got error when I run "Configure Web Synchronization Wizard": The operation completed successfully. (Exception from HRESULT: 0x80070000) (mscorlib).
When I run this wizard, I logged in the server as "Administrator" and point to the existing snapshot folder which is used by sqlce2.0.
Can anybody advise what cause the problem? Can I install it in the same virtual directory as the current one where the sqlce2.0 sits in?
Big thanks here.
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Jul 29, 2015
I have multiple web databases for storefront orders as linked servers on SQL Server 2008 R2. I need to organize the data for these orders into a structure that can be imported into my ERP application db frequently either on demand or periodically during the day. We are essentially trying to make the manual order entry process automated. My thought was to get the data into views that resemble the schema of the order table in my application db and then schedule a stored procedure with sql jobs or a load routine from within the ERP application that would insert data from the view into the order table.
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Mar 14, 2008
I have to DBs. One is the original and the other is for testing. They both have similar data structure. Wanted to know if there is a way to update tables contents in one db with data that is in the other one.
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Oct 30, 2006
I have a merge replication topology that allows some subscribers (clients) to retreive a number for certain columns (ie invoice number, order number, etc).
I have implemented a custom business logic handler to check for inserts from the subscriber and before updating the server, I call a stored proc on the server to generate a new number. I update the data set and call ActionOnDataChange.AcceptCustomData. This works great for the publication db but I am trying to get this new number back into the subscription db. I am using web synchronization so I really don't have a connection back to the subscriber database.
Any Ideas? I was thinking about keeping track of the updates myself and build a sql string and somehow get that back to the subscriber to run updates for those columns... I am wondering if I am pushing the limits of the business logic handler? Was it designed to do this? Of course the easy answer is to modify my client application but I am trying to avoid that at this point.
Any help/suggestions would be greatly appreciated!
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Mar 7, 2008
Hey!
DDS triggers 3 - 4 times on Report Servers with 15 mints apart..any ideas?
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Sep 5, 2013
I have a report designed in RB3 that uses a data source from a SQL database that is on the report server. I want to add data to the report from an access database an a network drive.
I can add the second data source and create a data set to add data to the report. The dataset query returns data from the Access database but when I run the report I get the following error.
An error has occurred during report processing. (rsProcessingAborted)
Cannot create a connection to data source 'Feasibility'. (rsError OpeningConnection)
Also when I test the connection to the Access data base I get error ERROR (IM002) (Microsoft)(ODBC Driver Manger) Data source name not found and no default driver specified.
I noticed that Report Builder is connecting to the report server. If I disconnect from the report server I can a can connect to the Access data base but not the SQL database.
How can I get the report to run against both data sources?
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Apr 21, 2008
well, i m been working in sql 2005 since 2yrs but i m new in sql replication....
can anyone tell me how we come to know that there is replication for the synchronization between 2servers? or between publishers and subscibers?
means how its set up?
can anyone tell me? thanks.
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Aug 23, 2005
Hi, I have looked and loked for the answer to this question and made no progress. I want to install MSDE on one of our servers, however, when I went to install it, I found that there was another MSDE already installed and running (it was an agent running with our backup software Veritas). Is it alright to create another database and have 2 running simultaneous on the same data engine? Is there any type of limitations that I sould know about - such as number of allowed accesses at one time? Any help is greatly appreicated.
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Mar 5, 2007
Hi..
At first I want to explain my Problem:
We have an SQL Server 2005 Database in our company. We develope an Application for customers (with VC#.NET 2005) which uses SQL 2005 Express as local database. The Application tests some devices and creates a protocoll .
As you see, the local databases must always load the actual test infos from main database (server). And the server Database must load and combine protocoll rows from different local databases (or local database must send it).
How can I solve this problem?
I could use a remote connection over tcp/ip. but it would not be reliable. I read some Info about Web Synchronization for Merge Replication. Is it possible to replicate just selected tables (one-direction (from server to client)). And is it possible replicate different client tables and combine the rows of them in server table (one direction from client to server).
I hope I could explain it. Any idea? Thanks..
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May 8, 2007
In SQL 2005 when i expand the local publication , Under replication when i try to view Synchronization Status i see the below message.
The initial snapshot for publication '%Database' is not yet available.
can any one help me on this issue.
Thanks
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Jun 12, 2015
IIS8 running on Windows Server 2012R2 with SQL Server 2012 SP2 installed. I have installed SQL Compact 3.5 SP2 Server Tools (64-bit) and set up the configuration. But when I in IE type URL.... I have set up the NTFS restrictions to the virtual directory. Doesn't Web Synchronization Works with IIS8?
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Nov 5, 2007
My goal is to run a bunch of select statements from different tables in one database and have them all insert to the same columns/table in the new database. Do I need a new data source for each statement, or is there a way to run all the statements in one set seeing as they all have the same destination. I keep receiving the SQL statement improperly ended error when trying.
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Jun 8, 2015
What is impact, if i stop and start Synchronization, for one subscription.
When i start, will it resync all tables by dropping and recreating at subscription.
On Publisher,
from Location Publiction,
right click on subscription,
select View Synchronization Status, From here, stop and start
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Jul 20, 2005
Hi all,I've got a question concerning synchronization of multiple database clients.Consider a database, accessed by two clients. Is it guarantted, that ifclient 1 succefully commits a transaction, client 2 _instantly_ sees thechanges made by client 1?thx and regards,StephanP.S..: For MS Jet databases I know there _is_ a delay between writing datato the database and being able to read this updated value from anotherconnection,so the question refers to "real" DBMs (esp. SQL Server) only ;)
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Feb 8, 2015
I am trying out merge replication and using web synchronization.However, I am worried that I am missing something because the way it is set up, it strikes me as a bit too insecure.
According to the best practices and security articles on Technet, I am given to understand that:
The SQL Replication Listener (read: the application pool account that will be running the replisapi.dll) has to be the db_owner to both distribution and publisher and be on the PAL list. Windows authenication should be used. That means the merge agents wouldn't need to know the password for those logins.
The basic authenication can be used (with SSL) to authenicate into a Windows user account to then connect to the replisapi.dll.
Here's the rub - I assumed that all I needed was a basic no-rights user account to be then given the execute permission on the replisapi.dll & read permissions to kick off the process. When I browse to the replisapi.dll and authenicate using the no-rights user, I get the expected "SQL Server WebSync ISAPI" message. But when I then run the merge agent, it fails saying that login to the distribution failed for the no-rights user. If I use the application pool's account, then I am able to run merge agent successfully.
But that means I am now looking at storing the password to the application pool account on client. I might have had missed a crucial step to ensure that the logins to the distribution & publication databases are done using the application pool account, not the user authenticated via IIS basic authentication?
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Mar 9, 2006
I am running SQL Server 2000 and SQL Server CE on the handheld device. I have created the publication on the SQL Server.
I can subscribe to the publication successfully on the handheld and it creates the .sdf file just fine.
When I then attempt to synchronize, the process will run for a long time and eventually error out. (The database has a couple large data tables that are used for value lookups)
The error says the connection was broken.
Any suggestions on correcting this?
I am thinking of breaking the replication database into 2. One with the large lookup files and one with the updated tables. I still need to get the large database with the lookup tables onto the handheld though.
Any thoughts, advice or similar experience handling a situation as this would be appreciated.
thanks,
Dan
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Jan 27, 2006
I have smilar kind of an issue with replication. I had sucessfully done replication with Sqlce2.0 on sql server 2000. In development machine I had VS 2003, sqlce development tools.
Now I use the same code done in VS 2003 into VS2005, it sucessfully converted the code.
In server machine (win 2003) I installed sql server 2000, sql server 2000 service pack 4, SP4 merge replication components, sql server 2005 mobile server tools and .Net framework 2.0. Created pubication sucessfuly. In this machine I configured IIS as per the web synchronization wizard. Gave anyonymous permissions. Virual direcory is created sucessfully. I tested the server agent in IE http://myservername/aliasname/sqlcesa30.dll.
SQL Server Mobile Server Agent 3.0 is shown
My application opened successfuly in windows mobile 5.0 Pocket PC emulator. When try to sync its dislays error "A request to send data to the computer running IIS is failed, see Hrresult"
No firewall in both development and server machines.
The same code works if its sqlce20 perfectly with vs2003 code. Not in this
Can anyone tell me whats wrong in this?
Regards
Arif
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May 9, 2015
I'm trying out a set up as following:
SQL Server 2008 standard as the publisher
SQL Server 2012 express as the subscriber
and I tend to use web synchronization; there is no domain trust.
After following the instructions at MSDN for configuring web synchronization, I have an error that I can't get past - after creating the initial snapshot on the publisher, I try to run replmerg.exe at the subscriber and I always get this error:
"The subscription to publication 'TestReplication' has expired or does not exist."
If I refresh the publisher's "Local Publications" and look within the "TestReplication", it does show that the subscriber is a known subscriber. Likewise, if I refresh subscriber's "Local Subscription", it has an entry for TestReplication publication.
I already verified that the user used by Replisapi.dll has the read permission to the snapshot folder, is a member of PAL, is db_owner of the publishing database and distribution database. I am using self-signed certificate for this test and I have already installed the certificate at the subscriber machine so that HTTPS is trusted. I can run diagnosis from subscriber so I know subscriber can reach and logs are being left at the publisher's IIS.
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Aug 3, 2006
Hi I want to Set up Such Merge Replication, Which can can Synchronize With out Network, Means Syncronization using CD.
Also When the Network connectivity will be available then it should do synchronization
I wants to transfer some file using CD only those changes to database which hasn't been synchronized, thats why Backup will not work.
Pls Help me, or tell me wether it is possible or not.
Tell me some work around, or ask me details,
You got to help me out, Otherwise I will loss trust in MSDN Forums.
Thanks in advance
Vishalgiri Goswami
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Oct 24, 2014
I'm updating some tables in a subscriber database with a stored procedure. After the tables get updated I'd like to sync them with the other subscriber dbs and the publisher db in that same stored procedure.I can do it manually in SSMS with the View Synchronization method. Are my only alternatives a batch job or C#?
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